Diffuse gamma-rays from galactic halos
| dc.creator | Pohl, M. | |
| dc.date | 1996-03-12 | |
| dc.date.accessioned | 2026-07-07T02:20:59Z | |
| dc.date.available | 2026-07-07T02:20:59Z | |
| dc.description | Here we review our current knowledge on diffuse gamma-rays from galactic halos. Estimates of the relative contribution of the various emission processes at low and high latitudes are compared to the data over 6 decades in energy. The observed spectral shape differs from what was expected, especially at ver low and very high energies. In the latter case, above 1 GeV, the sky emission related to gas exceeds the expected pi^0 decay spectrum. At energies below 1 MeV the relatively high gamma-ray intensity indicates at high density of nearly relativistic electrons which would have a strong influence on the energy and ionisation balance of the interstellar medium. Given the EGRET results for the Magellanic Clouds the gamma-ray emissivity in the outer halo is probably small, so that a substantial amount of baryonic dark matter may be hidden at 20-50 kpc radius without inducing observable gamma-ray emission. | |
| dc.description | 12 pages, invited Review at 156th Heraeus Workshop "The Physics of Galactic Halos", Bad Honnef, February 1996 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9603046 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9603046 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/10397 | |
| dc.subject | Astrophysics | |
| dc.title | Diffuse gamma-rays from galactic halos | |
| dc.type | text |